Best bet for DR web hosting is duplicating the applications in two or more physically different locations. In order to realize some return on such an expensive deployment, you need to be able to sweat all your assets. the only way to do that cost effectively is by adding some sort of load balancing across these applications. Most frequantly used solutions for hese types of environments are DNS based load balancing. Both Cisco and Radware offer a GLSB solution. In my experience, and I'll probably be killed for this, but the Radware solution is better.
my 2c
PS. i work for an independent integrator and not for either vendor.
all good if you want no visibility on what is actually flowing over your network. In my experience, and we've tried multiple solutions in a 25k user global company, from the crappy Tacit/Brocade WAFS to Cisco WAAS to Riverbed to Expand to Bluecoat mach5 to Juniper/Peribit etc. they all have their downsides. on the up side, riverbed has a super marketing team. that is about it. out of all the devices tested and proof of concepts done, there were only really two players left that were able to provide us with something that did not interfere with out traffic monitoring (ie. does not put all traffic into a tunnel), integrated or didn't interfere with our QoS policies, play along well with the rest of the network including MPLS etc and worked well over high latency links and those were the products from Expand and Cisco. we had some major stability issues with the riverbed stuff and the tech support was truly horrific. the bluecoat boxes worked okay to but in the end due to integration reasons and cost we chose expand. rolls out like a dream and we've had some really good performance increases on our wan links. my 2c
Slashdot Mirror
Best bet for DR web hosting is duplicating the applications in two or more physically different locations.
In order to realize some return on such an expensive deployment, you need to be able to sweat all your assets. the only way to do that cost effectively is by adding some sort of load balancing across these applications. Most frequantly used solutions for hese types of environments are DNS based load balancing. Both Cisco and Radware offer a GLSB solution. In my experience, and I'll probably be killed for this, but the Radware solution is better.
my 2c
PS. i work for an independent integrator and not for either vendor.
all good if you want no visibility on what is actually flowing over your network. In my experience, and we've tried multiple solutions in a 25k user global company, from the crappy Tacit/Brocade WAFS to Cisco WAAS to Riverbed to Expand to Bluecoat mach5 to Juniper/Peribit etc. they all have their downsides. on the up side, riverbed has a super marketing team. that is about it. out of all the devices tested and proof of concepts done, there were only really two players left that were able to provide us with something that did not interfere with out traffic monitoring (ie. does not put all traffic into a tunnel), integrated or didn't interfere with our QoS policies, play along well with the rest of the network including MPLS etc and worked well over high latency links and those were the products from Expand and Cisco. we had some major stability issues with the riverbed stuff and the tech support was truly horrific. the bluecoat boxes worked okay to but in the end due to integration reasons and cost we chose expand. rolls out like a dream and we've had some really good performance increases on our wan links. my 2c
erm....FW-1
wht is the big whoha! avout factoring a number? I don't understand this.